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647results about How to "Achieve self-healing" patented technology
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Dihydric alcohol containing acylhydrazone bond, dihydric alcohol containing acylhydrazone bond and disulfide bond, self-repairing polyurethane elastomer and preparation method thereof
ActiveCN106117486AAchieve self-healingGood physical and mechanical propertiesHydrazone preparationHydropoly/poly sulfide preparationPolyesterMechanical property
The invention provides dihydric alcohol containing an acylhydrazone bond, dihydric alcohol containing an acylhydrazone bond and a disulfide bond, a self-repairing polyurethane elastomer and a preparation method thereof. The polyurethane elastomer is prepared from the dihydric alcohol containing the acylhydrazone bond or the dihydric alcohol containing the acylhydrazone bond and the disulfide bond and a polyurethane prepolymer. The dihydric alcohol containing the acylhydrazone bond is prepared from a dihydrazide monomer and hydroxy aldehyde. The dihydric alcohol containing the acylhydrazone bond and the disulfide bond is prepared from a dithio lipid monomer, hydrazine hydrate and hydroxy aldehyde. The polyurethane prepolymer is prepared from a polyester or polyether polyol monomer and diisocyanate. After the self-repairing polyurethane elastomer is mechanically damaged, the acylhydrazone bond or the disulfide bond on a crosslinked polymer molecular chain achieves material self-repairing through dynamic exchange reaction. The self-repairing crosslinked polyurethane elastomer material is simple in preparation, can achieve self repairing at room temperature, is high in repairing capability, short in repairing time and capable achieving many times of self repairing and has better mechanical properties.
Owner:QINGDAO UNIV OF SCI & TECH +1
Crack self-repairing concrete using aerobic basophilic microorganisms and preparation method thereof
The invention relates to crack self-repairing concrete using aerobic basophilic microorganisms and a preparation method thereof. The concrete contains expanded perlite loading an aerobic basophilic microorganism repair agent, cement, pebbles, sand, silica fume, water, calcium lactate and water reducer. The crack self-repairing concrete has the crack self-repairing function and has heat-preservation and heat-insulation functions, the aerobic basophilic microorganisms serve as a crack repairing agent, calcium lactate serves as nutritional matter for microorganism metabolism, and expanded perlite serves as a carrier of the crack repairing agent. When concrete cracks, water and air enters the cracks so that resting microorganisms can restore the metabolism function, calcium lactate is converted into calcium carbonate precipitate, and accordingly the aims of automatically diagnosing and repairing the concrete cracks, preventing expansion of the cracks and improving concrete impermeability are achieved. The microorganism crack self-repairing concrete serves as a concrete material integrating the functions of crack self-diagnosis and self-repairing, lightweight, heat preservation and heat insulation, and has large research value and application potential.
Owner:TAIYUAN UNIV OF TECH
Self-repairing polyurethane coating and preparation method thereof
ActiveCN104356338ARepair damageGood physical and mechanical propertiesPolyurea/polyurethane coatingsPolyesterPolyol
The invention discloses a self-repairing polyurethane coating and a preparation method thereof. The polyurethane coating comprises the following raw materials in parts by mass: 15-20 parts of polyisocyanates, 40-60 parts of hydrophilic polyester polyol or polyether polyol, 2-3 parts of a chain extender and 7-15 parts of methylcystein. The preparation method comprises the following steps: preparing a hydrophilic polyurethane prepolymer from hydrophilic polyester polyol or polyether polyol and the chain extender, and reacting the isocyanate group in the hydrophilic polyurethane prepolymer with methylcystein, so as to obtain a polyurethane material of which the tail end or the main chain contains 2-urea-4-pyrimidone units; spraying or coating the polyurethane material on the surface of a substrate, thereby obtaining the self-repairing polyurethane coating. The self-repairing of the self-repairing polyurethane coating disclosed by the invention can be completed without external repairing agent or requirements of special environment, the coating is good in transparency, high in strength, good in filming property, simple in process and low in cost, and the function of repeated repairing in same positions can be achieved.
Owner:SOUTH CHINA UNIV OF TECH
High-resilience self-repair high-polymer aquagel and preparation method thereof
The invention discloses a high-resilience self-repair high-polymer aquagel and a preparation method thereof. The high-resilience self-repair high-polymer aquagel is prepared from the following raw materials in parts by mass: 15-20 parts of polyisocyanate, 40-75 parts of hydrophilic polyester polyol or hydrophilic polyether glycol, 1-5 parts of acrylate monomer, 10-15 parts of acrylamide monomer, 0.5-2 parts of chain extender, 1-3 parts of surfactant, 0.1-1 part of alkyl acrylate monomer and 0.5-2 parts of catalyst. The preparation method comprises the following steps: preparing an acrylate-monomer-terminated hydrophilic polyurethane high-polymer monomer self-assembly and an alkyl acrylate micelle; and carrying out radical copolymerization with acrylamide monomer under the photoinitiation action. The obtained self-repair high-polymer aquagel can complete self repair on self damage without any repair agent or specific environment, and has excellent resilience and physical and mechanical properties.
Owner:SOUTH CHINA UNIV OF TECH
Mobile agent-based Internet of things middleware development method
ActiveCN102158554AImplement self-configurationAchieve self-healingTransmissionSpecific program execution arrangementsQuality of serviceShortest distance
The invention discloses a mobile agent-based Internet of things middleware development method, which is used for remarkably improving the application capability of Internet of things middleware and reducing the development cost of Internet of things middleware application for diversified quality of service (QoS) needs of the Internet of things and dynamic network states. To realize a mobile agent-based Internet of things application program, the method is required to be characterized in that: the functions of the whole application program are required to be realized by a mobile agent, and the functions of the mobile agent can be dynamically changed on a network, and can be dynamically inserted into or deleted from hardware equipment to change own functions of the hardware equipment so as to achieve the aim of reprogramming of the network; and the agents can cooperate and communicate with one another. In the method, powerful and flexible Internet of things middleware is constructed to maximally shield the low-level details of the network and completely develop the technical advantages in the aspects of multi-type data sensing, short-distance wireless communication, self-networking, multivariate data cooperative processing and the like.
Owner:NANJING UNIV OF POSTS & TELECOMM
Preparation method of cement-based material having deep self-repairing function
ActiveCN104261736AGood repairing effectAccelerated carbonate mineralization depositionC constantNondestructive testing
The invention provides a preparation method of a cement-based material having a deep self-repairing function. The preparation method disclosed by the invention comprises the following steps of: mixing concentrated solution of carbonic anhydrase generating bacteria with saccharomycete powder according to the mass ratio of (50-60) to 1, and immobilizing on a same carrier; mixing a substrate with a nutritional substance according to the mass ratio of (30-40) to 1, and fixing on another carrier; adding cement, sand and water by taking the carriers as lightweight aggregates, wherein the mass of the carriers is 17-23% of the total mass of mortar; uniformly stirring, and forming a test piece; and manufacturing a crack of the test piece after standard curing, and introducing air to maintain and repair under 25-30 DEG C constant-temperature water bath conditions. The repairing process of the test piece is monitored by utilizing a concrete nondestructive detection technology (ultrasonic sound); the repairing result is detected through a water permeability test; the result shows that the crack is completely repaired after repairing for 21 d; in addition, compared with other microbiological methods for repairing cracks of the cement-based material, the crack repairing speed and repairing depth are greatly improved.
Owner:SOUTHEAST UNIV
Self-repaired graphene oxide/polyurethane composite material and preparation method thereof
The invention discloses a self-repaired graphene oxide / polyurethane composite material and a preparation method thereof. The preparation method comprises the following steps: performing a reaction on 2-amino-4-carbonyl-6-methylpyrimidine with an amino, polyisocyanate, polyester polyol or polyether polyol and a chain extender to synthesize polyurethane with quadruple hydrogen bonding units; adding 2-amino-4-carbonyl-6-methylpyrimidine into polyisocyanate to react to synthesize isocyanate with quadruple hydrogen bonding units, and then performing a reaction on the isocyanate and graphene oxide to obtain graphene oxide with quadruple hydrogen bonding units; and finally, compounding the polyurethane with quadruple hydrogen bonding units and the graphene oxide with the quadruple hydrogen bonding units to obtain the self-repaired graphene oxide / polyurethane composite material. The self-repaired graphene oxide / polyurethane composite material prepared by the invention can realize self-repair of the material without any additional repair agents and requirements on special environments. The material is simple in synthetic process and the repair rate reaches up to 85%.
Owner:SOUTH CHINA UNIV OF TECH
Polysiloxane-carbamate elastomer containing Diels-Alder bond and preparation method of polysiloxane-carbamate elastomer
InactiveCN105949422AHigh tensile strengthHigh elongation at breakOrganic chemistryElastomerPolyester
The invention relates to the field of materials, in particular to a polysiloxane-carbamate elastomer containing a Diels-Alder bond and a preparation method of the polysiloxane-carbamate elastomer. The polysiloxane-carbamate elastomer is prepared from a cross-linking agent, isocyanato-terminated polydimethylsiloxane, isocyanato-terminated polyester or polyether, diol containing the Diels-Alder bond as well as a catalyst dibutyltin dilaurate through curing after a reaction in anhydrous 1,4-dioxane under the protection of nitrogen. The elastomer has a microphase separation structure, multiple plastic micro-areas are formed in the elastomer, and on one hand, the micro-areas are taken as physical crossing points to improve tensile strength; on the other hand, the plastic micro-areas generate plastic deformation in a stretching process to increase elongation at break. The method adopts easily available raw materials, a synthesis process requires no special conditions or equipment, a synthesis technology is simple and easy to control, and the yield is high.
Owner:SICHUAN UNIV
Polysiloxane elastomer and preparation method and application thereof
InactiveCN108003317AHigh mechanical strengthCapable of heavy processingAdditive manufacturing apparatusElastomerSolvent
The invention relates to the technical field of new materials, in particular to a polysiloxane elastomer and a preparation method and application thereof. Amino or hydroxyl end capped polydimethylsiloxane, diisocyanate, phenol compounds and a cross-linking agent are dissolved into an organic solvent, a proper amount of catalyst is added, after the reaction is finished, a prepolymer is poured intoa polytetrafluoroethylene mold, heating and solidification are performed, and after the solvent is removed, the novel polysiloxane elastomer is obtained. The polysiloxane elastomer is good in mechanical strength, has the good thermoplasticity, can be reprocessed, has the self-repairing function, and is applied to the fields of flexible electronics, 3D printing, biomedicine and the like.
Owner:SICHUAN UNIV
Polyurea self-repairing thermoplastic elastomer and preparation method thereof
The invention discloses a polyurea self-repairing thermoplastic elastomer and a preparation method thereof. The preparation method comprises the following steps of introducing a monomer containing dynamic disulfide bonds into a polyurea reaction system; defoaming under the vacuum condition, curing and forming, so as to obtain the polyurea thermoplastic elastomer with self-repairing property. The polyurea self-repairing thermoplastic elastomer is prepared from the following components in parts by mass: 10 to 20 parts of diisocyanate, 45 to 70 parts of polypropylene glycol, 7 to 12 parts of chain extender, and 3 to 4 parts of catalyst. The polyurea self-repairing thermoplastic elastomer has the advantages that the self-repairing can be performed for multiple times without external conditionstimulation and special condition requirement, and the good mechanical property is realized.
Owner:NANJING UNIV OF SCI & TECH
Double-network ionic gel with stimulation responsiveness and self repairability
ActiveCN108623826AImprove mechanical propertiesImprove thermal stabilitySecondary cellsCross-linkElectric devices
The invention discloses double-network ionic gel with stimulation responsiveness and self repairability. Ionic liquid serves as a substrate, P(VDF-co-HFP) is used as a physical cross-linking network,dynamic covalent bond cross-linked PMA (polymethacrylate) copolymer serves as a chemical cross-linking network, and the two polymer cross-linking networks penetrate mutually to form a double network.Under synergistic effects of the double network, the ionic gel is excellent in mechanical performance, thermal stability and ionic conductivity. In addition, due to containing of reversible dynamic covalent bonds, self repairability under stimulation of light, thermal and the like can be realized. The ionic gel can be widely applied to lithium ion battery solid-state polyelectrolyte materials, gasseparation membranes, flexible electric devices, electrochemical sensors and the like.
Owner:PEKING UNIV
Room-temperature self-repairing fiber-reinforced epoxy composite material and preparation method thereof
The invention discloses a room-temperature self-repairing fiber-reinforced epoxy composite material and a preparation method thereof. According to the method, a repairing agent is loaded in a capillary tube, and buried among fiber-reinforced epoxy composite material layers, and the repairing agent contains a certain amount of foaming agent. After being formed, the composite material is heated above the decomposition temperature of the foaming agent, so that the interior of the capillary tube produces positive pressure. When the material is damaged to cause the breakage of the capillary tube, the repairing agent can fast flow to a breakage surface and produce reaction under the promotion of pressure, thus rebinding cracks together and repairing the damage of the material. The material has the outstanding characteristics that the capillary tube can provide enough repairing agent, so that the material has higher repair efficiency; through the introduction of the foaming agent, the repairing agent in the capillary tube can be guaranteed to fast flow automatically when the material is damaged.
Owner:SUN YAT SEN UNIV
Heterogeneous network operation and maintenance management method based on user perception
ActiveCN104469833AImprove experienceAccurate fault judgmentData switching networksWireless communicationMaintenance managementUser perception
The invention discloses a heterogeneous network operation and maintenance management method based on user perception. The method comprises the steps that 1, heterogeneous network operation and maintenance data are collected by a base station and a network monitoring node; 2, the obtained heterogeneous network operation and maintenance data are processed in a unified mode, and a unified operation and maintenance data model is built; 3, correlation analysis is carried out on the heterogeneous network operation and maintenance data and network faults according to the built operation and maintenance data model to achieve network fault positioning; 4, the network node independently analyzes the positioned faults, adjusts corresponding operation and maintenance data and achieves fault self recovering and network optimization. After network operation and maintenance data excavation analysis and network fault positioning, network self recovering is achieved by optimizing network parameters, user experience is improved, and network intelligent operation and maintenance are achieved.
Owner:广州市兰卡科技有限公司
High performance nano metal/mine ore powder composite self repairing agent and its preparing method
The present invention discloses one kind of high performance nanometer metal / ore powder composite self-repairing agent and its preparation process. The composite self-repairing agent is prepared with nanometer magnesium hydroxyl silicate ore powder 15-25 wt%, nanometer composite metal powder 6-12 wt%, nanometer magnesium hydroxyl silicate ore powder dispersant 0.5-2 wt%, nanometer composite metal powder dispersant 0.5-2 wt%, catalyst 0.2-2 wt%, stabilizer 1-5 wt%, cooperative metal friction additive 0.5-3 wt%, nanometer dispersant 2-5 wt%, auxiliary performance regulator 1-3 wt% and dispersing medium 41-73.3 wt%, and through certain technological process in certain technological conditions. It is used in lubricant oil and lubricant grease for nanometer composite repairing.
Owner:MIYOU GROUP
Self-repairing anti-glare waterborne polyurethane paint and preparation method thereof
ActiveCN106867388AGuaranteed transmission throughTo achieve the purpose of anti-glarePolyurea/polyurethane coatingsPolymer scienceCopolymer
The invention discloses anti-glare waterborne polyurethane paint with a self-repairing function and a preparation method thereof. The preparation method is characterized in that aliphatic polyether glycol subjected to dehydration treatment and diisocyanate are subjected to prepolymerization under the effect of organic tin catalyst; then, the aliphatic polyether glycol subjected to dehydration treatment is added to generate a segmented copolymer; primary chain extension is performed through dimethylolpropionic acid; neutralization is performed to form salt; deionized water and sodium sulfamate type chain extenders are subjected to emulsification and chain extension; sulfonic acid groups are introduced at a hard chain section; then, aliphatic diamine type or hydrazine chain extenders with higher reactivity is added, so that the rest isocyanate completely reacts; finally, the proper amount of auxiliary agents is mixed to obtain the waterborne polyurethane paint. The paint coating film has good diffusion performance and high transmissivity; the excellent anti-glare effect can be achieved without adding additional auxiliary agents or performing surface treatment; the coating film has the self repairing capability through a large number of reversible hydrogen bonds and sulfonic acid groups in polyurethane.
Owner:QINGYUAN YAKOO CHEM CO LTD
Aromatic terminal hydroxyl chain extender containing acylhydrazone bond, self-repairing polyurethane and preparation method thereof
ActiveCN107236106AEasy to prepareStrong performance controllabilityHydrazone preparationAlcoholRoom temperature
On the basis of the current situation of self-repairing polyurethane materials, the invention provides an aromatic terminal hydroxyl chain extender containing an acylhydrazone bond, self-repairing polyurethane prepared by using the aromatic terminal hydroxyl chain extender and a preparation method of the self-repairing polyurethane. Compared with dihydric alcohol containing an acylhydrazone bond, the aromatic terminal hydroxyl chain extender containing the acylhydrazone bond has the advantages that the molecular structure of the aromatic terminal hydroxyl chain extender has the large pi bond of a hydrazide benzene ring and the pi-pi conjugative effect of the pi bond of carbon-oxygen double bonds, and accordingly the chain extender is stable in structure. The prepared self-repairing polyurethane has the advantages that the molecular chain of the polyurethane contains the reversible acylhydrazone bond, can achieve self-repairing under room temperature, and is high in repairing efficiency and good in mechanical performance. The preparation of the self-repairing polyurethane has the advantages that the method is simple, raw materials are products which are commercially produced, and the prepared polyurethane is high in performance controllability and promising in application prospect.
Owner:QINGDAO UNIV OF SCI & TECH +1
Self-repairing self-lubricating material and preparation method thereof
The invention provides a self-repairing self-lubricating material and a preparation method thereof. The self-repairing self-lubricating material comprises modified PTFE and a microcapsule containing arepairing agent, wherein the modified PTFE is a particle with a core / shell structure, and uses PTFE particles are a core and a wear-resistant polymer or a two-dimensional material as a shell; the microcapsule is composed of a capsule core and a capsule wall, the capsule wall is a high-molecular polymer such as urea-formaldehyde resin and polyvinylpyrrolidone or a two-dimensional material such asgraphene, and the capsule core is a repairing agent such as dibutyl phthalate, glycidyl methacrylate and linseed oil. The material provided by the invention improves the problems that compatibility ofPTFE with heterogeneous materials is poor, mechanical strength is low and the PTFE is extremely easy to wear; and in addition, introduction of the microcapsule enables the PTFE lubricating material to have self-repairing regulating and controlling functions, friction-reducing anti-wear properties of the material are enhanced, and the service life of the lubricating material is improved.
Owner:TSINGHUA UNIV
Self-healing environmental barrier coating on member surface and preparation method thereof
The invention relates to a self-healing environmental barrier coating on the member surface and a preparation method thereof. The theory basis is that: when silicide is added into present EBC, if cracks appear in coating used in a combustion gas environment, silicide on the crack surface or near the crack will be rapidly oxidized to generate silicon dioxide (SiO2) or another oxide, thus the SiO2 can be used as a mobile phase to seal the cracks; furthermore, the volume expansion caused by the oxidation reactions and the high expansion coefficient of the silicide generate pressure stress on the cracks to accelerate the healing of the cracks; so the prepared environmental barrier coating has a good self-healing ability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Stimulus-responsive self-repair anticorrosive coating material and preparation method
ActiveCN110105843AImprove anti-corrosion performanceIncrease load rateAnti-corrosive paintsEpoxy resin coatingsCationic polyelectrolytesLayer by layer self assembly
The invention discloses a stimulus-responsive self-repair anticorrosive coating material and a preparation method. The coating material comprises a CuO microcapsule and a coating matrix. The CuO microcapsule comprises a capsule core and a capsule core carrier, the capsule core is a corrosion inhibitor, and the capsule core carrier is porous CuO; and the surface of the CuO microcapsule is coated byan anionic polyelectrolyte layer and a cationic polyelectrolyte layer alternately. The invention successfully constructs the anticorrosive coating material with ph responsiveness and self-repair dualefficacy. The porous CuO can improve the loading rate and encapsulation rate of the capsule core substance; at the same time, the anionic polyelectrolyte can be adsorbed on the surface by means of layer-by-layer self-assembly, under the action of Coulomb force, then cationic polyelectrolyte can be adsorbed on the surface, thus improving the dispersibility of the microcapsule in the coating, solving the agglomeration problem of the porous substance CuO, and at the same time improving the bonding performance of the capsule core carrier and the coating matrix, and the anticorrosion performance of the coating material can be further improved.
Owner:SUN YAT SEN UNIV
Self-repairing repeatable-processed polysiloxane elastomer, preparation method and application
The invention relates to the technical field of novel materials and specifically relates to self-repairing repeatable-processed polysiloxane elastomer, a preparation method and application. The self-repairing repeatable-processed polysiloxane elastomer has a following structural formula shown in a following image, wherein the R and the R1 in the structural formula are long chains prepared from carbon, hydrogen, oxygen and nitrogen. The prepared self-repairing repeatable-processed polysiloxane elastomer disclosed by the invention has the following advantages: a molecular main chain has urea bonds, and hydrogen bonds formed between the urea bonds can improve mechanical strength of materials; under catalytic action of metal ions, the urea bonds have thermal reversibility, and the material notonly has a self-repairing effect, but also can be recycled and processed again; the material can be applied to the fields of 3D printing, flexible electrode base materials and the like; a preparationtechnology is simple, and cost is relatively lower.
Owner:SICHUAN UNIV
Software repairing method and system
ActiveCN102855181AAchieve self-healingTimely and readySoftware testing/debuggingSoftware engineeringSoftware repair
A software repairing method includes steps: a client acquires abnormal information of desktop software; the client searches whether an old-version module of a software module causing abnormality locally or not according to the abnormal information, if yes, the software module causing abnormality is replaced with the old-version module, and otherwise, a repairing request is sent to a server; the server acquires a correction module according to the repairing request and sends the correction module to the client; and the client replaces the software module causing abnormality with the correction module. By the use of the software repairing method, software of the client need not wait for correction patches pushed by the server and can be repaired the first time, and software repairing is timely and ready. In addition, the invention further provides a software repairing system.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Injectable type collagen-based soft tissue filling material and preparation method thereof
The invention discloses an injectable type collagen-based soft tissue filling material and preparation method thereof, wherein the filling material mainly comprises collagen 0.5-20%, heparin 0.1%-10%, cell growth factor 0-1%, cushion liquid 70-99.4%, and its preparation comprises extracting soluble collagen from animal connective tissue, cutting off antigen deciding family from the collagen molecules through proteinase hydrolysis, purifying treatment, crosslinking by utilizing safety and nontoxic crosslinking agent, charging biologically active components, kneading the mixture repeatedly into grease form, sealing under asepsis condition and storing at low temperature.
Owner:JINAN UNIVERSITY
Fault recovery method and system
ActiveCN105335251AReduce workloadAchieve self-healingRedundant operation error correctionRecovery methodRestoration method
The invention discloses a fault recovery method and system applied to a pre-established storage system. The storage system comprises at least one storage node group. Each storage node group comprises M first storage nodes executing storage work and N second storage nodes not executing the storage work, wherein M and N are both positive integers. The method comprises: when any first storage node has a fault, determining that the first storage node with the fault is a faulted storage node, wherein a storage node group corresponding to faulted storage nodes is a faulted storage node group; selecting one second storage node in the faulted storage node group as a substitutive storage node according to a preset principle; and replacing the faulted storage node with the substitutive storage node, and completing the storage work that the faulted storage node needs to execute. Therefore, the workload of operation and maintenance is reduced, the recovery time of system faults is shortened, the data volume of migration is reduced, and the risk caused by system recovery is lowered.
Owner:INSPUR BEIJING ELECTRONICS INFORMATION IND
Method for preparing visible light self-repairing waterborne polyurethane coating material with double selenium bonds on main chain
ActiveCN106497385AAchieve self-healingAchieve brokenPolyurea/polyurethane coatingsPhotochemistryDiselenide
The invention discloses a method for preparing a visible light self-repairing waterborne polyurethane coating material with double selenium bonds on a main chain. The method comprises the following steps: firstly, preparing an isocyanate end capped polyurethane prepolymer with double selenium bonds on a main chain from raw materials of diisocyanate, dihydroxyethyl diselenide, macromolecule dihydric alcohol and dimethylolpropionic acid; secondly, adding triethylamine for neutralization, further adding a proper amount of deionized water for rapid emulsification, slowly adding a diamine chain extender which is diluted with water, and performing emulsification chain expansion under a condition that the rotation speed is greater than 1200r / min, thereby obtaining the visible light self-repairing waterborne polyurethane coating material with the double selenium bonds on the main chain. On the basis of the visible light reversibility characteristic of double-selenium dynamic covalent bonds, the waterborne polyurethane coating material with the double selenium bonds on the main chain is capable of achieving self-repairing of cracks and broken parts under radiation of gentle visible illumination, so that the service life of the material can be greatly prolonged, the potential safety hazard in use can be reduced, and a relatively long service life can be achieved for the waterborne polyurethane coating material. The waterborne polyurethane coating material with double selenium bonds on the main chain is applicable to coating of leather, textiles, paper, furniture, wall surfaces and the like, and has wide application prospects.
Owner:SICHUAN UNIV
Multistage electrical-network self-healing control device and control method thereof
ActiveCN102694381AAchieve self-healingEnsure balancePower network operation systems integrationSingle network parallel feeding arrangementsSelf-healingHuman–machine interface
Owner:ZHUHAI UNITECH POWER TECH CO LTD
Crosslinked polyurea elastomer with self-repairing property and preparation method thereof
The invention discloses a crosslinked polyurea elastomer with a self-repairing property and a preparation method thereof. The preparation method comprises the following step of copolymerizing a diisocyanate group-containing monomer, an amino-terminated vinyl ether monomer, trifunctional or higher functional isocyanate and a disulfide bond-containing monomer to obtain the crosslinked polyurea elastomer with the self-healing property. According to the preparation method, the trifunctional or higher functional isocyanate is used as a crosslinking agent, and the disulfide bond-containing monomer is attached to the polyfunctional isocyanate to form a dynamic crosslinking point of a polyurea system; a rapid dynamic exchange reaction can be performed on a disulfide bond in the obtained polyurea elastomer at a certain temperature, so that destruction and recombination of the dynamic crosslinking point are achieved; moreover, dissociation and reconstruction of a hydrogen bond in the system areachieved under the action of the temperature, so that reconstruction of a whole novel polyurea network structure is promoted and repairing and reworking of damages such as cracks are achieved; therefore, the polyurea elastomer has the excellent self-healing property and repeated processing performance and good mechanical properties.
Owner:TSINGHUA UNIV
Method for realizing self-curing protection in ECMP region
InactiveCN101420384AAchieve self-healingData switching networksHash functionTelecommunications network
The present invention provides a method used for in-field self-curing in equal-cost multipath in a network. The method is used for coping with a single malfunction in equal-cost multipath field in telecommunication network. The method according to the invention calculates the backup resource which requires to be reserved in the operation path beforehand, confirming a Hash function and key code corresponding to each operation path, expanding signaling information, and repositioning the service on the fault path to other operation sub-paths through a mode of Hash function again when a fault occurs. The method according to the invention effectively uses the topological characteristic of equal-cost multipath of ECMP field, and combines the establishing of the operation path and the reserving of backup resource, reduces the processing operation of node and the using number of the label, and at the same time realizes the in-field self-curing of ECMP field.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Self-repairing microcapsule used for metal anticorrosion coating and preparation method thereof
InactiveCN102391710AImprove mechanical propertiesWide variety of sourcesAnti-corrosive paintsMicroballoon preparationAuto industryCrazing
The invention discloses a self-repairing microcapsule used for a metal anticorrosion coating and a preparation method thereof, which belong to the technical field of self-repairing materials. The wall material of the self-repairing microcapsule is urea resin, the core material of the self-repairing microcapsule is natural plant oil, and the self-repairing microcapsule is prepared with a one-step in-situ polymerization method. The natural plant oil has the advantages of wide source and low cost and is easy to obtain. The metal anticorrosion coating is coated on the surface of metal to form an anticorrosion coating. Microcracks appear in the long-term use process, the self-repairing microcapsule embedded in the coating is broken by external force, and released natural plant oil and oxygen in the air can directly generate crosslinking polymerization reaction without catalysts to repair the microcracks to prevent the surface of the metal from being further corroded. The self-repairing microcapsule synthetized by the core material substance has the advantages of good mechanical performance, simple preparation technology and low cost and can be widely applied to the self repairing of metal anticorrosion coatings, such as automobile industry, ship industry and the like.
Owner:SOUTH CHINA UNIV OF TECH
Self-repairing anti-shrink cement based composite material
The invention discloses a self-repairing anti-shrink cement based composite material which comprises the following components in parts by weight: 400-800 parts of cement, 200-600 parts of waste, 400-1000 parts of sand, 264-528 parts of water, 10-70 parts of fiber, 4-10 parts of additive and polymer emulsion which accounts for 5%-10% of the gross weight of the cement. The self-repairing anti-shrink cement based composite material has good anti-shrink performance, impermeability and durability. When having a crack, the material can realize a self-repairing function under field conditions, and can be used as restorative materials for retaining walls, road mat coats, concrete pipelines, oil and gas pipelines, dams and the like.
Owner:CHINA UNIV OF PETROLEUM (BEIJING) +1
Intelligent firefighting rescue command and dispatch system
InactiveCN107198839AAchieve full coverageAchieve seamless integrationFire rescueClosed circuit television systemsNetwork ConvergencePositive pressure
The invention discloses an intelligent firefighting rescue command and dispatch system. The intelligent firefighting rescue command and dispatch system comprises a main individual transmitter, a positive pressure air breathing apparatus, an intelligent firefighting bracelet, an audio and video helmet, a Mesh network repeater, an interphone, an emergency command box, a positioning module and a main positioning IPC (Industrial Personal Computer), wherein the main individual transmitter performs information exchange with each of the positive pressure air breathing apparatus, the intelligent firefighting bracelet, the audio and video helmet and the Mesh network repeater through the wireless network, the Bluetooth, signal lines and the Mesh network, so as to monitor the on-site rescue situation in real time; the emergency command box performs information exchange with the 119 command center through 4G; and the positioning module is connected with the main positioning IPC through a wireless serial port to realize the positioning of rescue workers. According to the intelligent firefighting rescue command and dispatch system, the seamless information integration of a plurality of departments is realized through the effective network convergence, and meanwhile the vital signs of rescue workers and the air pressure values in air bottles can be monitored in real time, an early warning is given to the rescue workers, and the expansibility is good due to reserved interfaces.
Owner:恒德科技有限公司
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